Brake.



A. H. HALE.

BRAKE.

APPLICATION FILED NOV. 13, 1912.

PatentedSept. 14, 1915.

2 SHEETSSHEET I.

A. H. HALE.

BRAKE. I

APPLICATION FILED NOV. 13. 1912 Patented Sept. 14, 1915.

2 SHEETSSHEE12.

ALBERT H. HALE, 0F CAIRO, ILLINOIS.

BRAKE.

specification of Letters Patent.

Patented Sept. 1%, 1915.

Application filed November 13, 1912. Serial No. 731,197.

To all whom it may concern:

Be it known that I, ALBERT H. HALE, a citizen of the United States,residing at Cairo, in the county of Alexander and State of Illinois,have invented a new and useful Brake; and I do. hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same. I

This invention relates to a new and useful brake appliance.

As one of the objects of the invention, it is the aim to provide animproved applis ance of'this nature particularly applicable to anyconstruction of street railway cars now in use, for more eficientlyapplying the brakes. Another object of the invention is the provision ofimproved friction mechanism operable by means of a lever controlledclutch mechanism, and having connections with the brake rod for throwingthe brake shoes.

In the drawings there are disclosed certain features of construction,.but in practical fields these features may necessitate alterations, towhich the .patentee is entitled, provided the alterations arecomprehended within the scope of what is claimed.

The invention comprises further features and combination of parts,ashereinafter set forth, shown in the drawings and claimed.

In the drawings Figure 1 is a view showing the application of theimproved appliance as applied to a portion ofa street railway car. Fig.2 is a bottom plan view showing the sprocket 11 and the, friction disk17 constructed in one piece. Fig. 3 is a sectional view on line 3-3 ofFig. 1.

- Fig. 4 is a detail View showing the two clutch members 30 and 42. Fig.5 is a de tail view showing the friction disk 17 and the sprocket Wheel11. Fig. 6 is a detail view on line 66 of Fig. 3.

Referring more particularly to the drawings 1 designates a portion of acar body having the usual drive axles 3 and wheels 4:.

Secured at 6 to the bottom of the car bod is a pair of bearing brackets7 and 8, eac

being reinforced by the straps 9. Journaled in the bearing brackets is ashaft 10, on which a sprocket wheel 11 is mounted. Passing about thesprocket 11 is a sprocket chain 12, which in turn travels about the asto cause said sprocket wheel to rotate with the friction disk and theshaft 10. However, there is a slight play between the clutch members 18and 19. In Fig. 2, however, the clutch members 18 and 19 are dispensedwith, and the sprocket wheel 11 and the disk 17 are constructedintegral, or in one piece, as shown at 18 in Fig. 2. A colbolt 22, so asto engage one face of the sprocket wheel 11, in order to hold the clutchmembers 18 and 19 in cooperation.

Revolubly mounted upon the shaft 10 is .a sleeve 24 having a frictiondisk integral with one end thereof. This friction disk 25 is adapted tobe forced frictionally against the friction disk 17-, and when thefriction disk 17 is in revoluble motion, a rotary motion is imparted tothe disk 25, and as the sleeve 24: forms a part of the friction disk 25,motion is imparted to said sleeve. As the sleeve rotates, a steady pullis imparted upon a chain 26, which is attached at one end to said sleeveand wound about the same, which chain in turn at itsother end isconnected to the brake rod 27, and when the brake rod is operated by thechain the brake shoes (not shown) are applied. One end of the sleeve 24is provided with an integral collar 29, with which a clutch member 30engages frictionally to force the friction disk 25 against the disk 17.

rectangular opening 31", corresponding in shape to and fitting therectangular portion 30 so that upon movement of the arm 31, the clutchmember 30 will partially rock upon the shaft 10, thereby causing the camor inclined surfaces of the clutch member 30 1. lar 21 isheld upon theshaft 10 by the set I such wise as to cause the clutch members 30 and 42to separate axially, and cause the friction face 30 to frictionallycontact with one face of the collar 29 of the sleeve or drum 24sufliciently to push the disk 25 frictionally in contact with the disk17, thereby causing the disks 17 and 25 to rotate together, and pullupon the cable 26, which in turn-will operate the brake lever 27.However, under ordinary conditions this frictional contact between thefriction face 30 and the collar 29 of the sleeve or drum 24 is not greatenough to retard the proper action' of the disk 25 rotatingsubstantially with the disk 17. In other words, under ordinaryconditions, the arm 3l'is not to beoperated to its fullest extent, whichwould rock the clutch member 30 to such a degree as to cause the bindingof the parts. However, in extreme cases, for instance, emergency cases,after the arm 31 has been operated to produce the action aforesaid asordinarily used, and ordinarily applying the brake through the medium ofthe bar 27 the arm 31 may be operated or thrown substantially to itsfullest extent, thereby causing the clutch members 30 and 42 to camagainst each other and separate with sufficient force as to produce abinding action between the friction face 30 and the face of the collar29 of the sleeve or drum 24, and a frictional binding between the disks17 and 25, thereby assisting in retarding the action of the connectionsbetween the sprocket 11 and the drive axle 3, which is an additionalfunction to the previously stated function of applyin the brakes underordinary conditions. he spring 33 is exceedingly stout, and is connectedto an arm 34 of the rock rod 35, which is mounted in bearings 36 of thedash of the car body. Movable with the rock rod 35 is a lever 37, whichis adapted 'to engage the teeth 38 of the rack quadrant 39,'so as tohold the rock rod in adjusted positions. The clutch member 30 isprovided with a pair of annular inclined surfaces 40, each of whichterminatein a shoulder 41. Said clutch member 30 cooperates with acorrespondingly constructed clutch member 42, which is also mounted uponthe shaft 10, but is held against rotation by reason of the fact that arecess 43 receives the upper end portion of the bearing bracket 8.

When it is desired toapply the brake shoes (not shown), the lever 37 isoperated so as to rock the rod 35, which in turn pulls upon the rod 32,thereby rocking the clutch member 30. When the clutch member 30 rocks,the inclined semi-annular surfaces of the correspondingly constructedclutch mem bers 30 and 42 cooperate, so as to push the sleeve 24 in thedirection of the friction disk 17 so as to cause the friction disk 25 tofrictionally engage the disk 17. "When the two disks frictionallyengage, the tendency is to cause the disk 25 to rotate, and by reason ofits rotation the said chain is wound upon the sleeve, thereby impartinga pulling action thereon, so as to apply the brake shoes. The tendencyfor the two disks to rotate as one body, also retard the action orrotation ofthe axle, owing to the sprocket chain connections therewith.

From the foregoing in connection with the drawing, it-will be observed,that there has been'produced a novel, simple and efficient appliance forapplying brakes upon street cars, and one which has been found the otheris provided with a cable connection to abrake bar, a clutch memberhaving a clutch surface at one end and a transverse recess at the otherend to'receive a portion of one of the bracket hangers, a second clutchmemberhaving a clutch surface at one end to. cooperate with the firstclutch surface and being movable revolubly on said shaft, the other endof said second clutch member having a rectangular portion provided witha friction face, the friction element which is connected to the brakebar having an integral collar at one end frictionally with which thefriction face of the second clutch member engages when said secondclutch member is partially revolved, and a lever fitting saidrectangular portion and having connections with a brake crank rod,whereby upon cranking said rod the second clutch member may be rocked.

In testimony whereof Ihave signed my name to this specification inthepresence of two subscribing witnesses.

ALBERT H. HALE.

Witnesses:

A. F. Srenmn, C. C.

